Ming Dynasty: Grandfather Zhu Yuanzhang Gathered My Wool

When Zhu He woke up, he traveled back to the Hongwu period of the Ming Dynasty. With a causal system, after receiving rewards from the system, you must return your wishes to the system. "System, that... I still don't understand a little bit. For example, if I need an immortal cultivation technique now, what repayment is needed?" "Please host to make more reasonable requests. Cultivation of immortality is not in line with science." This has already been done in a systematic way, why should we talk about science? Then... Grandpa told me that my father, like the prince, suffered from cold and died immediately. I had no choice but to make a wish and get the special medicine for treating colds, but because of this I was miserably punished by the system. … Grandpa asked me to come up with the technology to increase grain production again. I took it, and the system almost killed me. From then on, my grandfather became the one who took advantage of me. When I couldn't bear it anymore, my grandfather showed his cards and came out wearing a dragon robe. Zhu He: Come and gather some more. Grandpa, you haven't gathered them in place yet! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.